[gradsusr] [EXTERNAL] Problem Using Functions tcorr2 and tregr2 in Linux

[Adams, Jennifer M. (GSFC-610.2)[ADNET SYSTEMS INC]]

Check the output from ‘q udpt’ which shows which user-defined functions are loaded and the full path to the .dll/.so/.dylib files.
http://cola.gmu.edu/grads/gadoc/udpt.html
--Jennifer

--
Jennifer Miletta Adams
ADNET Systems, Inc.
NASA/GSFC, Code 610.2
Building 32, Room S159
(301) 614-6070


From: gradsusr <gradsusr-bounces at gradsusr.org> on behalf of Stephen McMillan <smcmillan at planalytics.com>
Reply-To: GrADS Users Forum <gradsusr at gradsusr.org>
Date: Friday, September 11, 2020 at 10:53 AM
To: GrADS Users Forum <gradsusr at gradsusr.org>
Subject: [EXTERNAL] [gradsusr] Problem Using Functions tcorr2 and tregr2 in Linux

This question is for the developers of or a user familiar with both the Windows and Linux versions of opengrads.  This question is specifically about version 2.2.1.oga.1.  Another user could not use it on the ubuntu version as well.

I have a script that does temporal regressions of the variable "air" on various climate indices, using opengrads functions (B Tsuang extensions) tcorr2 and tregr2.  I have no problems using the Windows version on my laptop, but when I use it on my Cloud linux version, I get the following error when using tcorr2 (the tregr2 error is similar):

--------------------------
Opened ../stevem/data/cdf/monthlyanoms/air.sig995.mon.anom.nc<https://urldefense.proofpoint.com/v2/url?u=http-3A__air.sig995.mon.anom.nc&d=DwMFaQ&c=ApwzowJNAKKw3xye91w7BE1XMRKi2LN9kiMk5Csz9Zk&r=M2mFZsxo0ZoztoK2Lyoypu1kKkBVKyEoM9CXGWO42zk&m=9UhlMLP_CcqwKLV83skENCq04zKo8msPg6c3cWk_fxM&s=Eq-4R3cDkHagKxCLjM2g6GprcZ8LGw2P-rzQGv-QSPU&e=>
Opened data/index/pna.mon.1948-2020.ctl
i=1  j=1
Error from TCORR:  Too many or too few args
                   4 arguments expected
Operation Error:  Error from tcorr2 function
  Error ocurred at column 1
DISPLAY error:  Invalid expression
  Expression = tcorr2(ndexnew(t-2),air,time=oct1950,time=oct2019,12mo)
Cannot plot color bar: No shading information
Error from TCORR:  Too many or too few args
                   4 arguments expected
Operation Error:  Error from tcorr2 function
  Error ocurred at column 1
DISPLAY error:  Invalid expression
  Expression = tcorr2(ndexnew(t-2),air,time=oct1950,time=oct2019,12mo)
--------------------------

All of the variables are valid and available to the function, so the issue appears to be related to the fifth argument provided, which tcorr does not accept.

Here's the applicable command in my script:

'd tcorr2(ndexnew(t-'lt'),'dvar',time='date1',time='date2',12mo)'

where ndexnew is the independent variable timeseries, dvar = air, date1 and date2 represent the range of dates in "air" and 12mo is the time interval within both ndexnew and dvar.  Lt = the index leadtime in months, so a regression of Oct "air" is being done on the Aug index.

How do I get my script to override/ignore the official GrADS functions tcorr and tregr with the opengrads functions tcorr2 and tregr2?  I prefer to use the latter because they include the fifth argument "dt".  Note, other B Tsuang extension functions, such as "if_" work on my linux and the required B Tsuang extension files appear to be present.

Stephen McMillan
Research Meteorologist





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